Slewing Bearing Ball Slewing Ring Bearing for Offshore Crane (200.40.2250)

• Standard or Nonstandard: Standard
• Feature: Corrosion-Resistant
• Sealing Gland: Sealed On Both Sides
• Rolling-Element Number: Single-Row
• Roller Type: Four Point Contact Ball
• Material: 50mn, 42CrMo
• Model NO.: 200.40.2250
• Type: External Gear
• Brand: Lyhy
• Company History: 17years
• Warranty: 12months
• Transport Package: Wooden Box
• Specification: ISO2001: 9008
• Trademark: LYHY
• Origin: China
• HS Code: 848210900
• Production Capacity: 600PCS Per Year

Product Description

About LYHY slewing ring bearings
1.introduction:we are a manufacturer of slewing bearing/slewing ring bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building. 
2. Featured products: slewing bearing and slewing drive
3. Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4. Workers: 40
5. Certificate: ISO9001:2008, 3.1 certificate, CCS certificate, Science and Technology Progress Award
6. Annual Exportation: 8million USD
7. Exported countries: (39)
Asia: India, Pakistan, Iran, Signore, Georgia, Malaysia, Vietnam, Thailand, Philippines, Israel, Korea, UAE, Sri Lanka, Saudi Arabia,
Europe: Turkey, Russia, Spain, Czech Republic, Italy, Poland, Slovakia, Bosnia and Herzegovina, Austria, France, Germany, Switzerland, Finland, Ukraine, UK
America: USA, Canada, Mexico, Brazil, Puerto Rico, Peru, Chile
Africa: South Africa, Egypt
Oceania: Australia


1. Introduction of LYHY slewing bearing
LYHY bearings are a professional manufacturer in slewing ring bearings since 1993. We can also design and make other standard and non-standard ball bearings, roller bearings and precision bearings as per customer's different technical requirements.
Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Slewing ring bearing is a bearing that able to bear axial load, radial load and overturning torque. Under normal circumstances, slewing rings have their own mounting holes, lubricant holes and seal holes, to meet the different needs of the various host working under the various conditions;
On the other hand, slewing bearing itself has characteristics of compact structure, guide rotating convenient, easy to install and maintaining easily.
LYHY slewing ring bearings are usually used for low revolution while shaking and strained with an enormous axial force, moment and in some parts with radial force simultaneously.
Consequently the requirements for loading are stricter than ordinary bearings. If the selection of the slewing ring bearing has been wrong it will cause a great damage. Hence it is necessary to evaluate the exact forces acting on the slewing ring bearing and to select the suitable slewing ring bearings.

2. Structure
Slewing ring bearings have different types as per different structures:
Single row ball slewing bearings
Double row ball slewing bearings
Crossed roller slewing bearings
Triple row roller slewing bearings
Flange slewing bearings
The above slewing ring bearings can also be divided into three different types as per different transmissions:
Slewing ring bearings with no gear
Slewing ring bearings with external gear
Slewing ring bearings with internal gear




3. Features:
Slewing ring bearings have more features: Compact structure, reliable guide, simple installation, and easily maintenance

4. Application:
Slewing ring bearings can be widely used in lifting & transport machinery, mining machinery, construction machinery, port hoisting machinery, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments and other large rotary device.


LYHY Slewing Bearing Packing 
Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers  demand to be packed;

Model	Boundary Dimension(mm)			Mounting Dimension(mm)
	D	d	H	D1	D2	n1	n2	φ1	φ2
	mm			mm
021.25.500	616	384	106	580	420	20	20	18	18
022.25.500	616	384	106	580	420	20	20	18	18
021.25.560	676	444	106	640	480	20	20	18	18
022.25.560	676	444	106	640	480	20	20	18	18
021.25.630	746	514	106	710	550	24	24	18	18
022.25.630	746	514	106	710	550	24	24	18	18
021.25.710	826	594	106	790	630	24	24	18	18
022.25.710	826	594	106	790	630	24	24	18	18
021.30.800	942	658	124	898	702	30	30	22	22
022.30.800	942	658	124	898	702	30	30	22	22
021.30.900	1042	758	124	998	802	30	30	22	22
022.30.900	1042	758	124	998	802	30	30	22	22
021.30.1000	1142	858	124	1098	902	36	36	22	22
022.30.1000	1142	858	124	1098	902	36	36	22	22
021.30.1120	1262	978	124	1218	1022	36	36	22	22
022.30.1120	1262	978	124	1218	1022	36	36	22	22
021.40.1250	1426	1074	160	1374	1126	40	40	26	26
022.40.1250	1426	1074	160	1374	1126	40	40	26	26
021.40.1400	1576	1224	160	1524	1272	40	40	26	26
021.40.1400	1576	1224	160	1524	1272	40	40	26	26
021.40.1600	1776	1424	160	1724	1476	45	45	26	26
022.40.1600	1776	1424	160	1724	1476	45	45	26	26
021.40.1800	1976	1624	160	1924	1676	45	45	26	26
022.40.1800	1976	1624	160	1924	1676	45	45	26	26
021.50.2000	2215	1785	190	2149	1851	48	48	33	33
021.50.2000	2215	1785	190	2149	1851	48	48	33	33
021.50.2240	2455	2025	190	2389	2091	48	48	33	33
022.50.2240	2455	2025	190	2389	2091	48	48	33	33
021.50.2500	2715	2285	190	2649	2351	56	56	33	33
022.50.2500	2715	2285	190	2649	2351	56	56	33	33
021.50.2800	3015	2585	190	2949	2651	56	56	33	33
022.50.2800	3015	2585	190	2949	2651	56	56	33	33
021.60.3150	3428	2872	226	3338	2962	56	56	45	45
022.60.3150	3428	2872	226	3338	2962	56	56	45	45
021.60.3550	3828	3272	226	3738	3362	56	56	45	45
022.60.3550	3828	3272	226	3738	3362	56	56	45	45
021.60.4000	4278	3722	226	4188	3812	60	60	45	45
022.60.4000	4278	3722	226	4188	3812	60	60	45	45
021.60.4500	4778	4222	226	4688	4312	60	60	45	45
022.60.4500	4778	4222	226	4688	4312	60	60	45	45
6787/820G	1150	820	125	1100	880	14/4	8	25/22	32
6787/1600G	2000	1600	175	1920	1675	10	20	38	38
6788/1600G	2000	1600	175	1920	1675	24	24	32	32
6789/3405G	3638	3405	185	3700	3465	48	48	35	35

Transportation:
All LYHY slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.


Slewing Ring Bearings------Applications:
Slewing ring bearings are widely used in industry and known as "the machine joints" Here under is the specific slewing bearing applications
1. Construction machinery (e.g. cranes, excavators, loader, scraper)
2. Metallurgical machinery (e.g. for steel plant)
3. Heavy machinery equipment (e.g. mining machinery, concrete machinery)
4. Marine machinery equipment (e.g. vessel, port hoisting machine, port oil transfer equipment, onshore and offshore crane)
5. Light machinery equipment (e.g. paper machine, plastic, rubber machine, weave machine)
6. Wind power generator
7. Packing machinery


FAQ:

Q: Are LYHY BEARINGS trading company or manufacturer?
A: LYHY BEARINGS is a professional manufacturer for slewing bearings, thin section bearings, ball bearings and rolling bearings

Q: How do LYHY BEARINGS control quality of their bearing?
A: LYHY BEARINGS has established strict quality control systems, all the products and services has passed ISO9001-2008 Quality Certificate and third party such as CCS, LR,ABS,BV


Q: What is the MOQ?
A: MOQ is 1pc, pls message us for detailed information.

Q: How about the package for LYHY bearings?
A: Standard Industrial packing in general condition (Plastic tube+ professional plastic belts+ plywood case). Accept design package when OEM.

Q: How long is the production time?
A: It takes about 7-40 days, depends on the model and quantity.

Q: How about the shipping?
A: We can arrange the shipment or you may have your own forwarder.

Q: Is sample available?
A: Yes, sample order is acceptable.

Q: Can we use our own LOGO or design on bearings?
A: Yes. OEM is acceptable for LYHY BEARINGS. We can design as per your requirements and use your own LOGO and package design.


INSTALLATION OF LYHY SLEWING BEARINGS

Preparation:
Make sure that the model is correct and slewing bearing isn't damaged during transportation.
2.  Check the appearance and rotational state of the bearing, such as rotational precision clearance, rotating flexibility, seals position, lubrication grease etc.
3.  The installation datum plane and bracket installing plane should be clean, grease, burr, paint and other foreign body should be wiped off.

Installation:

1. The screws in the installing plane should be fit with the mounting holes in the slewing bearing
2.  The slewing bearing has a soft zone marked with an "s" on the upper surface, when installing the bearing, it is important to ensure that this area is placed in a non-load or infrequent load zone.
3.  When the bearing is placed on the supporting frame work it is important to check the interface between these two surfaces. This check should be carried out with the insertion of feel gauges between the two surfaces. If a gap should exist then it is recommended to plane/resurface the effective area so as to remove the gap.
4.  Install slewing bearing with high strength screws, and choose appropriate strength bolts. All bolts are required to be tightened evenly. The sequence of this tightening process is shown in Pic. Welding of bearing is not allowed, in the event of welding any adjacent parts, heat transfer shall be avoided so as to cause the bearing to become deformed or change the hardness.
5.  After installation, the bearing should be rotated to check for smooth operation and any emission of unusual noise. If either of the aforementioned are noted, then the bearing should be adjusted to eliminate them. The teeth of the largest run-out are coated with green paint.